Objectively, the chances of Dark Moon City actually falling are abysmal. At least as long as the Chancellor was here. As of yet, the highest-level attacking creature confirmed was the violet-grade one responsible for the breach at the southern gate, which is comparable to an 8-star beast-tamer. In contrast, the Chancellor is one of the few 9-star beast tamers in the empire.
However, the wards were damaged, and the Chancellor couldn't be everywhere at once while reinstating them. Therefore, the amount of damage that could be done to the city in the meantime while the city was vulnerable was great.
'But what is the point of all of this? They know they have no chance of winning!' Kain thought in frustration.